Page arrivalPlay.php only has data if the url become arrivalPlay.php?id=X. Is there any way to retrieve data from the 'dynamic' php to the javascript page? Feel free to change my approach if you think it is odd. Thank you...

Since you are receiving JSON data, I doubt that you would like to place them into an HTML element. I would either change my PHP file to produce HTML elements, or implement som javascript logic to create elements based on the JSON data the server provides.